Typewriting machine



Dec- 1 1925' 1,563,448 A J. A. B. SMITH i TYPEWRITING MACHINE Filed oct.25. 1923 2 Sheets-Sheet 1 .fj d4 +I n n fr 8 ego u, h V f l e s s 2 .5]ma www Mms. SAGZ .N. Bmw .I Aww .Ee JWM.

Dec. l 1925- Patented Een. 1, 1925.

U N l "l" E STA'ES PATENT OFFICE.

JESSE A. B. SMITH, F STANFORD, CONNECTICUT, ASSIG-NOR TO UNDERVJOODvTYP-E- W'RITER COMPANY, F NEW YORK, N. Y., ,A CGRPOBATO-N OF DELAWARE.

TYEWTRTING MACHNE.

Application filed. October 25, 1923.

To r/ZZ fr0/0m t may concern.

Be it known that l, Jnssn A. B. SMITH, a citizen of the United States,residing in Stamford, in the county of Fairfield and State ofConnecticut, have invented `certain new and useful Improvements inTypewriting Machines, of which the following` is a specification.

rlhis invention relates to the paper-handling devices of typewriters.

Particularly this invention is an improvement on the auxiliarypaper-feeding device forming the subject of my copending` applicationSerial No. 598,066, iiled October 3l, 1922, (now Patent No. 1,524,756,dated February 3, 1925).

The principal object oit the invention is to facilitate the insertionand withdrawal of superimposed work-sheets passed around the platen overa wide proof-sheet and a narrower carbon-sheet which shall remain on theplaten while the overlying worksheets, for instance, a ledger-sheet anda statementsheet, are withdrawn and replaced by another set.

Especially it is the object of the invention to improve the means forholding the recordsheet steady against the platen while the ledger-sheetand statement-sheet are being 3o exchanged.

The device on which the present invention constitutes an improvementcomprises, in connection with a long platen, an auxiliary paper-tablemounted in spaced relation forwardly of a main rear paper-table, and theusual feed-rolls running on the lower side of the platen and on thedelivery side of the platen above the printing` line, a collating tableextending upwardly and rearwardly. In the rear of this collating tablethere are displaceably mounted roll-carrying paper-lingers forseparately holding the record-sheet, together with its overlyingcarbon-sheet, on the platen.

A wide record-sheet, together with a narrower overlying carbon-sheet,positioned for giving a narrow margin on one side and a wide margin onthe other, is inserted at the introductory side of' the platen over thoauxiliary paper-table, and is pushed around beneath the platen while thefeed-rolls running on the lower side of the platen are released. Whenthe leading ends ot the record-sheet and overlying carbon-sheet come upat the front of the platen, they are Serial No. 670,624.

directed rearwardly beneath and to the rear ot the collating table andbeneath and to the rear oli' spring-clip-clamping lingers and releasedroll-carrying-paper-ingers, which roll-carrying-paper-fingers, after therecordsheet has been adjusted, are made effective to hold therecord-sheet together' with its carbon-sheet against the platen. Aledgersheet and narrower statement-sheet, together with interleavedcarbon-sheet, may now be inserted over the main rear paper-table andbrought up at the front ot' the platen forwardly ot' the paper-fingersand at the iront of the collating table. First the ledger-sheet isadjusted relatively to the record-sheet, and a releasable clamp is madeeffective to engage the margin of the ledger-sheet to hold it on thecollating table in adjusted position while the narrower statement-sheetis adjusted relatively thereto, after which the usual feed-rolls may bemade eifective and the clamp made ineffective, whereupon typing andline-feeding of all sheets may proceed in the usual manner.

According to this invention, the record- .sheet is held on the platen bytwo kinds of paper-iingers, namely, roll-carrying fingers pressinglightly against the carbon-sheet to prevent its withdrawal when thestatement and ledger sheets are being withdrawn and also engaging therecord-sheet, and, outside of the roll-carrying lingers, clampingfingers consisting of spring-clips extending a considerable distanceover the platen to bear only against the record or proof sheet, and tohold this unit securely against the platen when the ifeed-rollsare oit,and also to assist in advancing said unit when the feed-rolls are on.

Qther features and advantages will hereinafter appear.

In the accompanying drawings,

Figure l is an enlarged vertical section through the platen andassociated parts ot Jthe auxiliary paper-handling device embodied in anUnderwood typewriting machine, and illustrates the Ymanner in which aledger-sheet and a statement-sheet may be inserted from the rear aroundthe platen outwardly of aA record-sheet and its carbonsheet held in themachine.

Figure 2 is a front elevation of the platenframe, with the presentinvention installed thereon, partly diagrammatic,v with parts brokenaway.

As the drawings show, there is inserted in the machine an extra widerecord or proof sheet 1 together with a narrower overlying carbon-sheet2, positioned for giving narrow margin on one side and a wide margin onthe other side of said recordsheet, and which, at 3, is foldedrearwardly over the leading edge of the proof-sheet to facilitate theinsertion of the carbon-sheet 2 along with the proof-sheet 1 at theintroductory side of a more than ordinarily long platen et, journaled bymeans of its axle 5 in the end walls G of the platen-frame. Theproof-sheet 1, together with the overlying carbon-sheet 2, is passeddownwardly over an auxiliary rear paper-table 7, which is spacedforwardly from a main rear papertable 8. As the proof-sheet 1 and itscarbonsheet 2 are pushed downwardly, a usual curved paper-apron 9 guidesthese sheets around the'platen and up to the front thereof, the usualreleasable front and rear feedrolls 1() and 11 being castoff so as toprovide a free passage for the record-sheet 1 and its carbon-sheet 2. Asthe leading ends of the proof-sheet and its carbon-sheet come up at thefront of the platen, they are directed rearwardly beneath the frontcollating table 12, which is formed in right and left sections 13 and14, and the leading ends of the proof-sheet 1 and its carbon-sheet 2pass rearwardly beneath paper-fingers 15 and 1G carrying rolls 15 and15". llhe collating table 12 and the paper-lingers 15, 16 are mounted toswing away from the platen to allow passing the leading ends of theproof-sheet 1 and its carbon-sheet 2 below and to the rear thereof. Theroll-carrying paper-lingers, when swung into engagement with thecombined sheets 1 and 2, press slightly against the carbon-sheet toguard against accidentally pulling the carbonsheet out of the machinewhen the statement and ledger sheets are being removed.

According to the present invention, additional means, different from theroll-carrying paper-lingers, are used to safely prevent accidentaldisplacement of the extra wide proof-sheet during the withdrawal orinsertion of the ledger and statement sheets.

These means are particularly shown in Figure 1 and indicated in Figure2; they consist, in the illustrated embodiment of the invention, inspring-clips 17 and 17, which bear against the margins of theproof-sheet 1 outside of the roll-carrying lingers 15 and 16. Thesespring-clips conform to the curvature of the platen and extend aconsidera-- ble distance over the platen, holding the proof-sheetsecurely against the platen to prevent accidental displacement of theproof-sheet during the withdrawal and insertion of the ledger andstatement sheets. These spring-clips 17 and 17 may be combined withthe'roll-carrying paper-lingers 15 and 16, so that they are locatedoutside of the latter and will securely grip the record-sheet alone,while the roll-carrying tingers press only lightly against thecarbonsheet. In the embodiment shown, the connection is effected by acommon rock-shaft on which all roll-carrying lingers and spring-clipsare displaceably mounted.

1n the embodiment of the invention particularly shown in the drawings,the springclips are attached to the side gages 18 and 19 inwardly of thelatter. These side gages are respectively provided at their rear endswith inwardly-directed inclined iioor portions 20 and 21 to maintain theproof-sheet between the side-edge gages 18 and 19 and also to direct thesheet upwardly and rearwardly. The side-edge gages 18 and 19 are bentrearwardly from outwardly-extending arms 22 and 23 to the inner ends ofwhich the upper ends of the spring-clips 17 and 17" are detachablysecured by means ol screws 24.

When the record-sheet is adjusted to the typing position, the collatingtable, together with the roll-carrying fingers, spring-clips and sidegages, is swung by means of the common rock-shaft into a position atwhich said spring-clips and roll-carrying fingers come into engagementwith the proof-sheet 1 and carbon-sheet 2, respectively.

lVhile the record-sheet 1 is held in adjusted position by thepaper-linger 15 and 16 and spring-clips 17 and 17, a ledgersheet 25narrower than the proof-sheet and a statement-sheet 26, together with aninterleaved carbon-sheet 27, may be inserted downwardly over the mainrear paper-table 8, and at their leading edges brought up at the frontof the platen and to the front of the collating table 12, where theledger-sheet 25 may be gaged at either or both of its side edges bymeans of the side-edge gages 28 and 29 of the outer edges of therespective table sections 13 and 14, while the narrower statement-sheet26 may be gaged by the lefthand side-edge gage 29.

After the ledger-sheet 25 has been adjusted, it may be temporarily heldin adjusted position by means of a clamp ii() comprising a foot 30carried by a lever 31 fixed upon a shaft 32 journaled at its ends in abracket 33 on the outer side of the right-hand side-edge gage 28 of thecollating table 12. This clamp is releasably held in either itseffective or ineffective position by a spring 84. While the ledgersheetis held in adjusted position by the clamp 30, the narrowstatement-slieet 26 may be adjusted relatively to the ledger'- sheet 25,whereupon the feed-rolls 1() and l1 may be made effective. The clamp 30may now be released and typing upon all the sheets may proceed in theusual manner, all the sheets being line-spaced together either' by meansof the finger-wheel 36 or the usual ratchet-wheel 37 and the mechanismconnected therewith.

The carbon-sheet 2 tor the wide proofsheet l is considerably narrowerthan the proof-sheet l, which may have a comparatively wide margin onone side projecting beyond the ledger-sheet 25 and carbon-sheet 2 forreceiving additional data such as the name or' the customer, which it mabe desired to have upon the proof or recoin sheet and not upon thestatement or ledger sheet, and a narrow margin on the other side. Thisexposed broad marginal part oi the proof-sheet appears in the drawingsat the right-hand end of the platen, but by sliding the collating tablel2 along the platen Lla margin for additional data can be exposed at theleft-hand side of the recordsheet, or, if desired, the collating tablecan have a middle location so as to provide a wider projecting margin ateach side oit the record-sheet.

When the desired item or items have been typed, the feed-rolls l() and'il may be cast off and the ledger and statementsheets withdrawn fromthe machine upwardly at the front of the platen, while the proof-sheet lis safely held against accidental displacement by the spring-clips 17and 17, and the narrower carbon-sheet overlying the proof-sheet -is heldunder light pressure of the roll-carrying lingers 15 and 16 to guardagainst it being` accidentally pulled out when the previouslytypedledger and statement sheets are being removed and new ledger andstatement sheets, with interleaved carbon-sheets, are being insertedover the main rear papertable 8, the remaining proof-sheet receivingimpressions of the matter typed upon a plurality of sets ot successivestatement and ledger sheets.

In the illustrated embodiment of the invention, thehereinbefore-mentioned papertingen` and clamping means 'for theproofsheet and its carbon-sheet and the collating table are mounted upona rock-shaft or rod extending above and along the platen. Thisrock-shaft comprises a main or middle rod part 40 and right and leftsections ll and 42 provided at their inner ends with sockets L3 in whichthe ends oit the main rod part 40 are fixed by means of screws 44. Thegage-carrying arms 22 and 23 are provided at the upper sides of theirinner ends with out-turned portions 45 secured by means of screws 46 toU-shaped bracket members 47, which are slidably and rotatably mounted onthe main rod part d), and each ot which is provided with a projectingiinger-piece 48 by which the paperiingers and spring-clamps may beeither slid along or rotated upon the main rod part i0 to be in adjustedposition and pressed towards the platen by means of detents Al-9 carriedby the U-shaped members and pressed by means of springs 50 into alongitudinal groove 5l of the rod part 4&0. it will be seen that thevarious paper-fingers and spring-clamps may be vibrated independently ofthe rod 40 or together with said rod or rock-shaft, on which by similarmeans also the coilating table is mounted.

Variations may be resorted to within the scope of the invention, andportions of the improvements may be used without others.

Having thus deicribed my invention, I claim:

In a typewriting machine having a revoluble platen, an introductorypapertable directing to the platen a wide recordsheet, paper-feeding toprolls bearing lightly upon a narrow carbon-sheet directly overlappingthe record-sheet, a collating table at the delivery side of the platenfor a narrow statement-sheet placed over the carbon-sheet, andreleasable main rollers running upon the platen to hold all the sheets,an auxiliary record-sheet holding element in the form of devices bearingheavily against exposed and widely separated margins of the widerecord-sheet and co-operative with said top rolls for securely holdingsaid sheet permanently against the platen, preventing displacementthereof while the main rollers are cast otil and the narrowstatement-sheet is being withdrawn from the platen and replaced byanother.

JESSE A. B. SMITH.

